No abstract

Camera phones are now very common but there are some issues that affect their usability. These can occur because users look through the LCD to frame the image and can often miss the icons displayed around the edge that present important information about exposure, battery life, number of shots remaining, etc. This may lead to shots being missed or poorly exposed. We created a sonified luminance histogram to present exposure information, a sound cue to indicate memory card space remaining and a tactile cue for battery charge status. A user study showed that participants were able to use the sonified histogram to identify exposure successfully and could recognise the status of the battery and memory card well, suggesting that alternative forms of output could free-up the screen for framing the image.